Chirped Bragg grating fabricated in fused fibre taper for strain-temperature discrimination

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Frazao, O (Autor) Outra; Melo, M (Autor) Outra; Marques, PVS (Autor) FCUP; Santos, JL (Autor) FCUP

Revista

Título: Measurement Science and Technology

Vol. 16

Páginas: 984-988

ISSN: 0957-0233

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 54 Citações

Scopus - 58 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-000-43H

DOI: 10.1088/0957-0233/16/4/010

Abstract (EN): In this work, two sensing heads based on the fibre Bragg gratings written in fused biconical fibre taper for simultaneous measurement of temperature and strain are proposed. In the first configuration a comparison between a uniform Bragg grating and a grating written on a tapered fibre section, resulting in a chirp grating, is evaluated. The second sensing head consists of two gratings written in two different regions of the taper section. This fibre taper has a different geometry in each conical section, achieved by stretching the fibre at different velocities during the fabrication process. These two configurations are based on the different strain and similar temperature sensitivities of the Bragg gratings used to discriminate the two physical parameters. The performances are assessed and compared. The second structure presents good performance and more sensitivity, compared to the first sensing head.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5